add initial circleci config

.circleci/config.yml

@@ -0,0 +1,68 @@
+version: 2
+jobs:
+  build:
+    docker:
+      - image: circleci/node:10.15.1
+    steps:
+      - checkout
+      - run:
+          command: npm ci
+      - run:
+          command: make build
+      - persist_to_workspace:
+          root: .
+          paths:
+            - public
+
+  deploy:
+    docker:
+      - image: olizilla/ipfs-dns-deploy
+        environment:
+          DOMAIN: docs.libp2p.io
+          BUILD_DIR: build
+    steps:
+      - attach_workspace:
+          at: /tmp/workspace
+      - run:
+          name: Pin website, post notification for PRs or update DNS on master
+          command: |
+            # Upload build dir to cluster.ipfs.io
+            hash=$(ipfs-cluster-ctl \
+              --host /dnsaddr/cluster.ipfs.io \
+              --basic-auth $CLUSTER_USER:$CLUSTER_PASSWORD \
+              add --rmin 3 --rmax 3 --name "$DOMAIN" \
+              --recursive /tmp/workspace/$BUILD_DIR | tail -n1 | cut -d " " -f 2 )
+
+            preview_url=https://ipfs.io/ipfs/$hash
+
+            echo "Website added to IPFS: $preview_url"
+
+            if [ ! -z "$CIRCLE_PULL_REQUEST" ] ; then
+              # Add website preview as PR Status - https://developer.github.com/v3/repos/statuses/#create-a-status
+
+              status_url="https://api.github.com/repos/$CIRCLE_PROJECT_USERNAME/$CIRCLE_PROJECT_REPONAME/statuses/$CIRCLE_SHA1"
+              params=$(jq --monochrome-output --null-input \
+                --arg target_url $preview_url \
+                '{ "state": "success", "target_url": $target_url, description: "Website added to IPFS", "context": "IPFS" }' )
+
+              echo "Github status update: $params"
+              curl --silent -X POST -H "Authorization: token $GITHUB_TOKEN" -H 'Content-Type: application/json' --data "$params" $status_url
+
+            elif [ "$CIRCLE_BRANCH" == "master" ] ; then
+              # Update DNSLink for domain
+
+              dnslink-dnsimple -d $DOMAIN -r _dnslink -l /ipfs/$hash
+
+            else
+              echo "Not a Pull Request or Master branch. Skipping."
+            fi
+
+workflows:
+  version: 2
+  build-deploy:
+    jobs:
+      - build
+      - deploy:
+          context: ipfs-dns-deploy
+          requires:
+            - build